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The volcanism that nearly annihilated life on Earth 250 million years ago also boosted the silica content of coal that is driving high lung cancer rates in a Chinese county.

Study has implications for Fe and Cu bioavailability in the open ocean.

India's environmental regulations have become stronger in the 25 years since Bhopal, but enforcing them remains a challenge.

Senate Hearing: Neither finance committee members nor experts agree on legislation's economic impact

New research highlights some of the issues swirling around nanomaterials in wastewater, but no answers are forthcoming.

Mercury in small fish peaks when fish-eating birds are breeding in the San Francisco Bay estuary.

Alga's sudden move from Texas prompts fears for other vulnerable streams; many ask whether the invader hitched a ride on natural gas drilling equipment.

Photovoltaic prices will continue to drop, thanks to an oversupply of polysilicon

News Analysis: Copenhagen meeting is unlikely to produce a new climate-change treaty

Change in climate modeling shrinks projected levels of carbon fixation by plants.

New research points to a natural origin for the Baltic Sea's dioxins, but pollution may play a role.

Russia and Kazakhstan could become leaders in green energy production and perhaps even sell green energy to Europe.

The honor recognizes his research and his work to promote careers in science among Hispanics and Native Americans.

Researchers use PCBs and pesticides to pin down the provenance of bluefin tuna in the Atlantic Ocean.